package cn.dxj1016.deadLock;
//死锁：多个线程互相抱着对方需要的资源，然后形成僵持
public class DeadLock {
    public static void main(String[] args) {
        Makeup g1 = new Makeup(0, "灰姑娘");
        Makeup g2 = new Makeup(1, "白雪公主");

        g1.start();
        g2.start();
    }
}

//口红
class Lipstick {

}

//镜子
class Mirror {

}

class Makeup extends Thread {
    //    需要的资源只有一份，用static来保证只有一份;没有static的话，每创建一个对象就有一个资源
    static Lipstick lipstick = new Lipstick();
    static Mirror mirror = new Mirror();

    int choice;//选择
    String girlName;//使用化妆品的人

    Makeup(int choice,String girlName) {
        this.choice = choice;
        this.girlName = girlName;

    }

    @Override
    public void run() {
//        化妆
        try {
            makeup();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    //    化妆，互相持有对方锁，就是需要拿到对方的资源
    private void makeup() throws InterruptedException {
        if (choice == 0) {
            synchronized (lipstick) {//获得口红的锁
                System.out.println(this.girlName + "获取口红的锁");
                Thread.sleep(1000);

            }synchronized (mirror) {//一秒之后想获得镜子
                System.out.println(this.girlName + "获得镜子的锁");
            }
        } else {
            synchronized (mirror) {//获得镜子的锁
                System.out.println(this.girlName + "获得镜子的锁");
                Thread.sleep(2000);

            } synchronized (lipstick) {//二秒之后想获得口红
                System.out.println(this.girlName + "获得口红的锁");
            }
        }
    }
}